Exception: rawText does not contain a valid rfc2822 header field

Problem reported by Miguel Enrique - 10/2/2024 at 12:51 AM

Submitted

Hello.

Since I updated to version 9035 in the Delivery Log, I find a multitude of errors with the text: Exception: rawText does not contain a valid rfc2822 header field.

These are emails that are received, but that for smartermail are not correct, but that last week were received without problems.

In the end the sender receives a bounce and the email does not reach the recipient.

Is anyone else experiencing this problem?

6 Replies

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Tony Scholz Replied

10/2/2024 at 7:51 AM

Employee Post

Hello Miguel,

Can you send a test message to ascholz@beta.smartermonitor.com for review. Thank you

Tony Scholz

Lead Network/System Administrator

SmarterTools Inc.

www.smartertools.com

Miguel Enrique Replied

10/3/2024 at 9:01 AM

Hello. I have created a ticket and it is being reviewed.

terry fairbrother Replied

10/2/2026 at 1:58 AM

What was the outcome of this as my delivery logs show these and have several emails stuck in the spool yet opening the email says the message no longer exists

[2026.10.02] 09:54:11.116 [69839754] Starting local delivery to redacted

[2026.10.02] 09:54:11.116 [69839754] Exception: rawText does not contain a valid rfc2822 header field

[2026.10.02] at SmarterMail.Standard.Network.MIME.MimeHelper.OldMime.MimeHeader.Parse()

[2026.10.02] at SmarterMail.Standard.Network.MIME.MimeHelper.OldMime.MimeParser.ReadPart(MimePart part, Int32 depth, String defaultContentType, String defaultContentSubtype)

[2026.10.02] at SmarterMail.Standard.Network.MIME.MimeHelper.OldMime.MimeParser.Parse()

[2026.10.02] at SmarterMail.Standard.Network.MIME.MimeHelper.OldMime.MimeReader.GetParts()

[2026.10.02] at MailService.ContentFiltering.伻.DeliverFilterMessage(丄侽 spoolMessage, LocalRecipient localRecipient)

[2026.10.02] at SmarterMail.MailService.RelayServer.MessageQueue.丄俦.DeliverToLocalRecipientAsync(丄侽 spoolMessage, LocalRecipient localRecipient, db_system_settings_readonly systemSettings, db_system_delivery_settings_readonly systemDeliverySettings)

[2026.10.02] 09:54:11.116 [69839754] Removed from LocalDeliveryQueue (0 queued or processing)

restarting the spool doesn't make the que disappear

Ricardo Ranieri Replied

10/2/2026 at 6:51 AM

Hello

The same problem from @icloud.com

[2026.10.02] 10:36:36.683 [40693596] Exception: rawText does not contain a valid rfc2822 header field

terry fairbrother Replied

10/2/2026 at 3:40 PM

it was icloud accounts that were the issue

Douglas Foster Replied

Yesterday at 11:19 AM

It is probably detecting the problem below. This text is from the Declude Antivirus documentation document.

Outlook 'Space Gap' Vulnerability: This vulnerability occurs when there is a space in one of the MIME

headers where there is not normally a space (such as "Content-Type :" instead of "Content-Type:"). This is not RFC-compliant, but Outlook will treat it as valid and be able to see a virus that virus scanners will not usually see. There is no legitimate reason for an E-mail to be formed like this.

If the email is legitimate, you can probably solve the problem by removing the space character. Before delivering the document to the recipient, it would be wise to determine why the header is malformed. ICloud.com should know how to format a header, so where did the malformed header originate?

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